7.What kind of interaction do barnades attached to roots of mangrove ?
A. commensalism
B. mutualism
C. parasitism
D. predation

8. What is the primary role of plants in the ecosystem?
A. Plants break down organism into small particles.
B. Plants absorb nutrients from the soil.
C. Plants produce foods for animals.
D. Bigger plants give shade to animals.

9. Heron and fish are examples of animals living in a mangrove swamp. What
relationship do they show?
A. parasitism
B. commensalism
C. mutualism
D. predation

10. Ants live in colony. Each ant has role and responsibility in their kingdom. What kind
of interaction do they show?
A. mutualism
B competition
C. commensalism
D. cooperation​